Chemically induced interface states in photoelectrochemical cells
- 1 April 1983
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 42 (7) , 582-584
- https://doi.org/10.1063/1.94009
Abstract
This letter reports for the first time a significant improvement of p-GaP photocathodes for hydrogen evolution by treatment with ruthenium ions. Sub-band-gap spectroscopy has revealed that contrary to expectations the ruthenium treatment introduces new states in the gap 1.23 eV above the valence-band edge and close to a band edge. A new model based upon kinetic considerations is proposed to explain these effects.Keywords
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